40 BULLETIN 120, U. S. DEPARTMENT OF AGRICULTURE. 



Table III. — Measurements of flow in concrete-lined canals giving hydraulic 



Canal and location. 



Shape of 

 section. 



3 



o 

 © 



ft 

 



O 



ft 





 "3 



<? 



"S 



i 



ft 

 



OQ 



3 

 



1 



SI 

 g 



Idaho. 





Feet. 



■ 10 



Feet. 



4.24 



Sec.-ft. 

 294 



2.75 



0.000237 



Feet. 

 0.114 



Feet. 



484 







10 



4.28 



294 



2.76 



.000262 



.229 



875 







10 



4.35 



294 



2.81 



.000170 



.058 



340 







10 

 10 



4.30 

 4.58 



294 

 318 



2.81 

 2.96 



. 000237 

 .000245 



.401 

 .408 



1,699 

 1,665 



Ridenbaugh, Boise Valley 



[Trapezoidal 

 i slopes 1£ 



10 



4.15 



257 



2.69 



.000242 



.358 



1,478 





[ to 1. 



10 

 10 

 10 

 10 

 10 



111 



10 

 10 

 10 

 10 

 10 





50 

 103 

 230 

 382 



50 

 103 

 230 

 382 

 376 

 318 



59 



1.30 

 2.13 

 2.73 

 3.29 

 1.30 

 2.06 

 2.72 

 3.24 

 3.11 

 2.90 

 1.37 







1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1,000-2,400 

 1, 000-2, 400 



650 

 369 

 556 

 925 

































































1 Trapezoidal 

 \ slopes 2 

 I to 1. 



f 16 



10 



10 



I io 



2.17 

 1.62 

 1.62 

 1.62 



92.5 

 54. 5 

 54.8 

 54.6 



1.71 

 1.25 

 1.25 

 1.25 



. 000187 

 . 000452 

 .000448 

 . 000450 



0.121 

 .167 

 .248 

 .415 





Boise Main Canal, section No. 2, 

 Boise Valley. 



(Trapezoidal 

 \ slopes 1J 

 [ tol. 



' 40 

 40 

 40 

 40 

 40 



. 40 





316 

 1,027 

 476 

 245 

 119 

 1,209 



2.14 

 3.88 

 2.64 

 1.95 

 1.44 

 4.22 



.000300 

 . 000388 

 . 000362 

 . 000288 

 . 000288 

 . 000312 



.300 

 .388 

 .362 

 .288 

 .288 

 .312 



1,000 



1,000 

 1,000 

 • 1,000 

 1,000 

 1,000 







40 





1,011 



4.33 



. 000263 



.630 



2,400 



Boise Main Canal, section No. 3, 

 Boise Valley. 



}....do 



40 



40 



40 



. 40 





470 

 470 

 238 

 238 



2.45 

 2.65 



1.87 

 2.09 



. 000334 

 . 000246 

 . 000300 

 . 000204 



.800 

 .590 

 .720 



.490 



2,400 

 2,400 

 2,400 

 2,400 



Boise Main Canal, section No. 4, 

 Boise Valley. 



|....do 



I 40 

 \ 40 





1,027 

 456 



3.64 

 2.89 



.000316 

 . 000147 



.757 

 .353 



2,400 

 2,400 



New York Canal, Payette-Boise. 



Trapezoidal . 



39.6 



5.6 



1,824 



5.23 



. 0001611 



0.097 



602 





do 



10 

 10 



40 



2.7 

 3.2 



221 

 316.7 



2,637 



2.54 

 2.91 



5.434 



. 000251 

 .000283 



.000639 



0.226 

 2.132 



901 

 1,020.6 



1,900 



Do 



do 



Twin Falls North Side, near MU- 

 ner. 



Nearly rec- 

 tangular. 



Oregon. 



















Umatilla, U. S. Reclamation 

 Service project. 



Trapezoidal 

 slopes li 

 to 1. 



1.5 



'14.9 

 14.9 





5.7 



205 

 205 



.58 



2.13 

 2.17 



.00070 



.00140 

 .00167 



.652 



.9 

 .2 



932 



640 

 120 



Do 



Semicircular 



*4.9 





205 

 205 



2.15 

 2.12 



.00273 

 .00177 



.6 



1.9 



220 

 1.075 







14.9 





1 Radius. 



